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/*
* Copyright (c) 1997 - 2001 Kungliga Tekniska Högskolan
* (Royal Institute of Technology, Stockholm, Sweden).
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include "kdc_locl.h"
RCSID("$Id: misc.c 21106 2007-06-18 10:18:11Z lha $");
struct timeval _kdc_now;
krb5_error_code
_kdc_db_fetch(krb5_context context,
krb5_kdc_configuration *config,
krb5_const_principal principal,
unsigned flags,
HDB **db,
hdb_entry_ex **h)
{
hdb_entry_ex *ent;
krb5_error_code ret;
int i;
ent = calloc (1, sizeof (*ent));
if (ent == NULL) {
krb5_set_error_string(context, "out of memory");
return ENOMEM;
}
for(i = 0; i < config->num_db; i++) {
ret = config->db[i]->hdb_open(context, config->db[i], O_RDONLY, 0);
if (ret) {
kdc_log(context, config, 0, "Failed to open database: %s",
krb5_get_err_text(context, ret));
continue;
}
ret = config->db[i]->hdb_fetch(context,
config->db[i],
principal,
flags | HDB_F_DECRYPT,
ent);
config->db[i]->hdb_close(context, config->db[i]);
if(ret == 0) {
if (db)
*db = config->db[i];
*h = ent;
return 0;
}
}
free(ent);
krb5_set_error_string(context, "no such entry found in hdb");
return HDB_ERR_NOENTRY;
}
void
_kdc_free_ent(krb5_context context, hdb_entry_ex *ent)
{
hdb_free_entry (context, ent);
free (ent);
}
/*
* Use the order list of preferred encryption types and sort the
* available keys and return the most preferred key.
*/
krb5_error_code
_kdc_get_preferred_key(krb5_context context,
krb5_kdc_configuration *config,
hdb_entry_ex *h,
const char *name,
krb5_enctype *enctype,
Key **key)
{
const krb5_enctype *p;
krb5_error_code ret;
int i;
p = krb5_kerberos_enctypes(context);
for (i = 0; p[i] != ETYPE_NULL; i++) {
if (krb5_enctype_valid(context, p[i]) != 0)
continue;
ret = hdb_enctype2key(context, &h->entry, p[i], key);
if (ret == 0) {
*enctype = p[i];
return 0;
}
}
krb5_set_error_string(context, "No valid kerberos key found for %s", name);
return EINVAL;
}
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